Results 41 to 50 of about 8,356 (263)

New techniques of multiple integral field spectroscopy [PDF]

, 2001
The work of this thesis is to investigate new techniques for Integral Field Spectroscopy (IPS) to make the most efficient use of modem large telescopes. Most of the work described is aimed at the FMOS for the SUBARU 8m telescope.
Ren, Deqing
core  

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

Using dimers to measure biosignatures and atmospheric pressure for terrestrial exoplanets

, 2014
We present a new method to probe atmospheric pressure on Earth-like planets using (O-O) dimers in the near-infrared. We also show that dimer features could be the most readily detectable biosignatures for Earth-like atmospheres and may even be detectable
Misra, A., Meadows, V., Claire, M., Crisp, D.   +3 more
core   +1 more source

Hydration Features on Near-Earth Objects: Integrating New Data with Prior Results

The Planetary Science Journal
Near-Earth objects (NEOs) are excellent laboratories for testing processes that affect airless bodies, as well as informing us about solar system history. Though most NEOs are nominally anhydrous because they formed inside the solar system frost line and
L. E. McGraw, C. A. Thomas, J. P. Emery, A. S. Rivkin   +3 more
doaj   +1 more source

Lunar‐Based Photothermal CO2 Reduction Strategy: Self‐Evolving Transient Active Interface and Band Engineering

Advanced Science, EarlyView.
A self‐evolving Pd/Ov‐FeTiO3 photothermal catalyst, inspired by lunar soil, enables efficient extraterrestrial CO2 conversion. The formation of transient active interfaces and oxygen vacancies extends light absorption to the infrared range and optimizes electron transfer.
Yahang Wang, Yuhuan Li, Quanxin Wang, Deng Li, Pakkin Leong, Meng Wang, Shi Feng, Runyang Mo, Xianjin Shi, Xiaohui Li, Gangqiang Zhu, Chipui Tang   +11 more
wiley   +1 more source

The Nova Synthetic Data Base: A Principal Component/AI Analysis of Novae Synoptic Spectra

The Astrophysical Journal Supplement Series
The Nova Synthetic Data Base (NSDB) is presented as the first publicly available database of synthetic spectra for classical nova shells, spanning an unprecedented range of physical parameters (e.g., ejecta mass, chemical composition, temperature, and ...
Bruno C. Santos, Marcos P. Diaz, Larissa Takeda   +2 more
doaj   +1 more source

Design and development of an adaptive optics system in visible and near-infrared for Inter-University Centre for Astronomy and Astrophysics 2-meter telescope [PDF]

Journal of Astronomical Telescopes, Instruments, and Systems, 2019
Robo-AO is the first robotic autonomous laser-guided adaptive optics (AO) system operating in the sky. It is a very economical AO system especially suitable for observations with 1- to 3-m class telescopes. A second Robo-AO system, which works both in the visible and near-infrared wavelengths, has been developed to improve the image quality of the 2-m ...
Jyotirmay Paul, Hillol K. Das, A. N. Ramaprakash, Mahesh Burse, Pravin Chordia, Kalpesh Chillal, Gaurav Datir, Bhushan Joshi, Pravin Khodade, Abhay Kohok, Vilas Mestry, Sujit Punnadi, Chaitanya Rajarshi, Chikku Shekhar   +13 more
openaire   +1 more source

Imaging Electric Polarization Switching in Multilayer Graphene

Advanced Science, EarlyView.
Domain wall sliding‐induced electric polarization switching is directly observed for the first time in multilayer graphene, enabled by a novel optical readout method. The polarization switching is realized upon application of global and local electric fields, and mechanical forces between neighboring polar domains of opposite out‐of‐plane polarizations
Zhou Zhou, Xiyao Peng, Jianfeng Bi, Jing He, Fei Xue, Jie Jiang, Huizhen Wu, Zhiwen Shi, Haoliang Qian, Toshikaze Kariyado, Sihan Zhao   +10 more
wiley   +1 more source

UWISH2 - the UKIRT Widefield Infrared Survey for H2 [PDF]

, 2011
We present the goals and preliminary results of an unbiased, near-infrared, narrow-band imaging survey of the first galactic quadrant (10° < l < 65°; ?1Graphic3 < b < +1Graphic3).
J. Hatchell, Movsessian, Tigran, Gosling, A., W. P. Varricatt, C. J. Davis, Koo, B. -C., Lee, Y.H, Pyo, Tae-Soo, Stecklum, B., Eisl\uf6ffel, J., Stanke, T, G. Ioannidis, Smith, M. D., Movsessian, T. A., K. W. Hodapp, Drew, J., T. Stanke, A. Gosling, Froebrich, D., T. M. Gledhill, Nikogossian, Elena H., Gosling, Amanda, J. Karr, Khanzadyan, T., Teixeira, P. S., Kim, H.-J., H. Matthews, Eisloeffel, J., Rawlings, M. G., M. Takami, Kumar, M. S. N., Lucas, P. W., R. Gredel, Lee, Y. -H., C. Aspin, Gledhill, T., Stanke, T., Lee, Y. H., Froebrich, Dirk, T. Khanzadyan, Hatchell, J., Magakian, Tigran Yu., T. S. Pyo, M. S. N. Kumar, A. Chrysostomou, M. D. Smith, H.-J. Kim, Chrysostomou, A, Pyo, T. S., Koo, B.-C., Hodapp, Klaus W., M. G. Rawlings, Hatchell, Jennifer, Eislöffel, J., B. Stecklum, Gledhill, T. M., J. J. Lee, Matthews, H., Lee, Y.-H., T. Y. Magakian, Eislöffel, J., Magakian, T. Y., Gredel, Roland, Chrysostomou, A., Y.-H. Lee, B.-C. Koo, Lee, H. T., J. Drew, Kim, H. J., T. A. Movsessian, Koo, B. C., Lee, J. J., J. Eislöffel, D. Froebrich, Lucas, P.W., Hodapp, K. W., Davis, C. J., Kim, Hyun-Jeong, E. H. Nikogossian, Lee, J.J, Kim, H. -J., Takami, M., H. T. Lee, Teixeira, P. S.; id_orcid, Khanzadyan, Tigran, Aspin, C., Karr, J., Stecklum, Bringfried, Eisloffel, Jochen, Gredel, R., Kumar, M S N, Smith, Michael D., Varricatt, W. P., P. S. Teixeira, Aspin, Colin, Drew, Janet E., Nikogossian, E. H., P. W. Lucas, Ioannidis, G., Davis, Chris J.   +99 more
core   +1 more source

Vertical and Temporal H3+ Structure at the Auroral Footprint of Io

The Planetary Science Journal
We report the first observation of the vertical and temporal structure of the H _3 ^+ emission at the auroral footprint of Io, as observed by Juno/JIRAM.
A. Mura, A. Moirano, V. Hue, C. Castagnoli, A. Migliorini, F. Altieri, A. Adriani, A. Cicchetti, C. Plainaki, G. Piccioni, R. Noschese, G. Sindoni, R. Sordini   +12 more
doaj   +1 more source